Exchange Server 2007 SP2 Update Rollup1 is available to download

Update Rollup 1 for Exchange Server 2007 Service Pack 2 (SP2) resolves issues that were found in Exchange Server 2007 SP2 since the software was released. This update rollup is highly recommended for all Exchange Server 2007 SP2 customers. For the details related to the issue fixed by it refer to Description of Update Rollup 1 for Exchange Server 2007 Service Pack 2.

If you are developing application based on Exchange Web Services then following are the issues fixed by Update Rollup 1 for Exchange Server 2007 Service Pack 2 (SP2):

973868 A delegate cannot cancel meetings in the organizer's calendar by using Exchange Web Service (EWS)